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[Qemu-devel] [PATCH 4/5] linux-user: Introduce h2g_valid
From: |
Jan Kiszka |
Subject: |
[Qemu-devel] [PATCH 4/5] linux-user: Introduce h2g_valid |
Date: |
Sat, 16 Aug 2008 11:39:02 +0200 |
User-agent: |
Mozilla/5.0 (X11; U; Linux i686 (x86_64); de; rv:1.8.1.12) Gecko/20080226 SUSE/2.0.0.12-1.1 Thunderbird/2.0.0.12 Mnenhy/0.7.5.666 |
Introduce h2g_valid to check if a given host address can be converted
into a valid guest address.
Signed-off-by: Jan Kiszka <address@hidden>
---
cpu-all.h | 4 ++++
1 file changed, 4 insertions(+)
Index: b/cpu-all.h
===================================================================
--- a/cpu-all.h
+++ b/cpu-all.h
@@ -674,6 +674,10 @@ static inline void stfq_be_p(void *ptr,
assert(__ret == (target_ulong)__ret); \
__ret; \
})
+#define h2g_valid(x) ({ \
+ unsigned long __guest = (unsigned long)(x) - GUEST_BASE; \
+ (__guest == (target_ulong)__guest); \
+})
#define saddr(x) g2h(x)
#define laddr(x) g2h(x)
- [Qemu-devel] [PATCH 0/5] linux-user: Detect and fix 32-bit guest on 64-bit host issues - v2, Jan Kiszka, 2008/08/16
- [Qemu-devel] [PATCH 1/5] linux-user: Safety belt for h2g, Jan Kiszka, 2008/08/16
- [Qemu-devel] [PATCH 4/5] linux-user: Introduce h2g_valid,
Jan Kiszka <=
- [Qemu-devel] [PATCH 2/5] linux-user: Introduce qemu_vmalloc_guest_safe, Jan Kiszka, 2008/08/16
- [Qemu-devel] [PATCH 3/5] linux-user: Allocate guest-reachable descriptor tables, Jan Kiszka, 2008/08/16
- [Qemu-devel] [PATCH 5/5] linux-user: Fix h2g usage in page_find_alloc, Jan Kiszka, 2008/08/16
- Re: [Qemu-devel] [PATCH 0/5] linux-user: Detect and fix 32-bit guest on 64-bit host issues - v2, Anthony Liguori, 2008/08/21